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Individual
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Individual
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Application filed by IndividualfiledCriticalIndividual
Priority to ES1974200648UpriorityCriticalpatent/ES200648Y/en
Publication of ES200648UpublicationCriticalpatent/ES200648U/en
Application grantedgrantedCritical
Publication of ES200648YpublicationCriticalpatent/ES200648Y/en
Common Detailed Techniques For Electron Tubes Or Discharge Tubes
(AREA)
Securing Globes, Refractors, Reflectors Or The Like
(AREA)
Abstract
Improved electric bulb, which is characterized in that the glass surface of electric lamps in general has, starting from and close to the cap itself, a fine grooved base with thick circular edges, whose projections and grooves formed in parallel to the base of the bulb, cover the entire periphery, except a small surface in the upper part corresponding to the cylindrical or semi-spherical cap, which is completely smooth. (Machine-translation by Google Translate, not legally binding)
ES1974200648U1974-02-201974-02-20
PERFECTED ELECTRIC BULB.
ExpiredES200648Y
(en)